This light has six modes: 80 Lumen High, 40 Lumen Low, Red + White Glow, Red LED Night Vision, Red Emergency Flash Mode, and SOS Flash Mode. It includes a detachable, adjustable elastic strap which is comfortable to wear for hours on end. A tilt function on the headlight makes it easy to position the light right where you need it. Run times are 9 hours on high or 18 hours on low. A red emergency flasher and SOS flasher help you be seen in case of emergency. Perfect for hiking, camping, working outside at night, and when the power goes out.